EP 0932296 A3 2000-07-05 - Image reading apparatus

Title (en)

Title (de)

Title (fr)

Publication

Application

Priority

JP 1121798 A 19980123

JP 18404898 A 19980630

Abstract (en)

[origin: EP0932296A2] To provide an image reading apparatus provided with a pixel shifting mechanism for shifting an image incoming to a line sensor in a main scanning direction by substantial 1/2 of a pixel pitch, a scanning mechanism for scanning the line sensor in a sub-scanning direction and a control unit for performing scanning operation two times at a pitch almost equal to the pixel pitch at respective positions shifted to each other in the sub-scanning direction by a value equivalent to substantial 1/2 of the pixel pitch and causing the pixel shifting mechanism to perform the pixel shifting of 1/2 of the pixel pitch between first-time sub-scanning and second-time sub-scanning, and an image-signal generating unit for generating an image signal by averaging the pixel data values obtained through the two repetitions of sub-scanning between diagonal-directional adjacent pixels. <IMAGE>